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Finding the Fourth Proportional to 21,829.42, 32,740.79 and 7,036.80

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Solution

The fourth proportional to 21,829.42, 32,740.79 and 7,036.80 is: 10,554.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,829.42 : 32,740.79 = 7,036.80 : x
  2. Step 2: Convert to fraction form
    21,829.42/32,740.79 = 7,036.80/x
  3. Step 3: Cross multiply
    21,829.42x = 32,740.79 × 7,036.80
  4. Step 4: Simplify right side
    21,829.42x = 230,390,326.81
  5. Step 5: Solve for x
    x = 230,390,326.81/21,829.42
  6. Step 6: Final answer
    x = 10,554.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.